Hey Tim,
A lot of people are having trouble with commander. There are a few things you can try. Under updates on Dayz Commander verify Arma2 and ArmaOA, and update Dayz Commander if one is available. It this doesn't work, maybe download Dayz Launcher and search us. I think we show up there. Last you can go in to OA, select expansions and make sure you have the ones required. If that's okay then go to multi players, remote, put in our ip address and hit ok. Beatniks will show up at the top of the screen. Hope this helps you and sorry you are having so much trouble.
See you in the game,
Hippi